TM 5-3805-262-34
INSPECTION
(1)
( 2)
( 3)
( 4 )
( 5 )
(6)
Inspect control valve body for cracks, breaks, or other damage. Inspect
spool bore for grooves, deep scratches, or other visible wear. Replace
entire control valve if control valve body requires replacement.
Inspect spool (29) for grooves, deep scratches, or other visible wear.
Replace if necessary.
Check that free length of spring (22) is 2.63 inches. Use spring gage and
check that force required to compress spring to 1.375 inches is 13.5 to
16.5 pounds. Check that force required to compress spring to 0.938 inch
is 18 to 22 pounds. Replace spring if free length or force required to
compress it is not as specified above.
Check that free length of spring (21) is 4.25 inches. Use spring gage and
check that force required to compress spring to 2.250 inches is 27 to 33
pounds. Check that force required to compress spring to 1.375 inches is
38 to 48 pounds. Replace spring if free length or force required to com-
press it is not as specified above.
Connect multimeter across coil (11) wires. Check that multimeter indi-
cates 45 to 65 ohms resistance. Replace coil if multimeter indication is
not correct. Connect multimeter across one wire of coil and metal housing
of coil. Check that multimeter indicates infinity (open circuit). If mul-
timeter indication is not correct, replace coil. Connect multimeter lead
to other wire of coil. Multimeter must indicate infinity (open circuit).
Replace coil if multimeter indication is incorrect. Repeat this step for
coil (15).
Inspect remaining parts for cracks, breaks, defamation, distortion, or
damaged or stripped threads.
3-667
